Coil and switch unit



June24, 1930. H. E. NORVIEL COIL AND SWITCH UNIT Filed Oct. 31., 1927 XV/fl III/1km;

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i 15 present invention clearly shown.

Patented June 24, 1 9 30 3 UNITED S\T.A-TES PATENT OFFICE HARRYE.NORVIEL, OF ANDERSON, INDIANA, ASSIGNOR TO DELCO-REMY OOBPORA- '.I.ION,-OF DAYTON, OHIO; A GOBPORATION OF DELAWARE con. AND swrrcn UN T 7Application filed October 31, 1927. Serial No. 229,867.

This invention relates to ignition apparatus for internal combustionengines and more particularly" to ignition coil and lock switch unitsadapted for use on an automobile. X One object of the present inventionis to simplify the' construction and reduce the cost of manufacture ofignition switch and ignition coil units for-automobiles. v

Further objects and advantages of the present inventionv will beapparent from the following description, reference being had tothe'accompanying drawings, wherein a preferred form of embodiment of theIn the drawings:

Fig. 1 is a front elevation of a lock switch and coil unit embodying thepresent invention; M

Fig.2 is a sectional view on the line 2-2 ofFig;1;" A,

Figs. 3 and 4 are sectional views on the lines33and'44 of Fig.2; 7 IFig. 5 is a fragmentary sectional view on.the 1ine 55 of Fig.1; and, 1

F i 6 is an end view ofan insulating lock in the ignition coil' caselooking in the direction of the arr0w.6 in ig. 2.

The ignition coil comprises a central nonconducting tube 20 upon which asecondary coil 21 is wound, and a primary coil 23 is wound upon thesecondary coil 21 and insulated therefrom. The-layers of the. secondarycoil 21 are separated by windings of non-conducting paper the sidemargins of which extend beyond the ends of the layers of secondaryturns. The projecting spirally wound margins of the paper are indicatedat 24 and25. This assembly of windings is mounted upon a centralmagnetizable core comprising a bundle of iron wires or strips 26. Theassembly of windings and core are secured. to a non-conducting block 27,the end face 28 of whlch abuts the ends of the paper margins 24. Theblock 27 is provided with a central recess for receiving one end of the.core 26. The block 27 is attached to the core and paper margins by acoating of a mixture of beeswax and rosin which is placed upon which theleads 31 and 33 are brought out and the lead 36 is enclosed by aninsulatblock 27.

the surface 28 and within the recess 29 of the block.

A non-conducting tube 30 is placed around the coil margins 25. Theinnerend 23 of the primary coil 23 and the outside end of the secondary21are connected together at 31 and are surrounded by an insulating tube32. The inside end 33 of the secondary 21 is located against the core 26and against the end thereof as indicated at 34 and a nonconducting tube35 is placed around the core and secondary end 33. The outer lead 36 ofthe primary 23 is brought out at the end of the winding opposite to thedirection in ing sleeve 37 A wire 38 enclosed by a tube 39 is laidagainst the coil assembly and is long enough to extend beyond the righthand end of the coil assembly as far as the lead 31 extends and toextendbeyond, the. left handend of the coil assembly as. far as the lead36 may extend. The leads 36 and 38 'pass through 'notches 40 in the Theassembly of parts thus far described are enclosed by a wrapping of. aplurality of turns of sheet iron 41 separated by paper insulation 42 toprovide an external magnetic circuit, the external magnetic circuitretaining the wire 38 in position. The as sembly of parts thus fardescribed is inserted within a tubular metal case 43 which is adapted tobe closed at its right hand end 1 as viewed in Fig. 2 by cover membercomprising a sheet metal disc 44 to which a nonconducting body 45 isattached by hollow terminal screws 46, lock washers 47 and nuts 48,there being insulation washers 49 between the lock washers 47 and themetal disc 44. The body 45 provides a tubular member 50 having a centralrecess for receiving the tube 35 and the right hand end of the. core26., Externally, the bod 45 provides a cable receiving sleeve 51 aving ametallic lining 52 which is electrically connected with the core 26 andhence with the secondary lead 33 by a nail 53.

Before the body 35 is assembled with the coil as shown in Fig. 2, thelead wires 31 100 and the wire 38 are passed through the tubu lar bolts46 and, while the coil assembly is held in a vertical position with therlght hand end of the coil 26 uppermost, a quantity of sealing wax suchas h drolene 55 .is poured into the space left within the case 43 abovethe windings and core members.

26 is uppermost, and a quantity of sealing material such as hydrolene ispoured into the space within the case 43 above .the nonconducting block27. Some of this hydrolene will pass through the notches of the blockinto the space between the surface 28 of the block and the upper end ofthe prigamary coil 23.- There should be suflicient hydrolene to coverthe block 27. A non-conducting end cover 60 having holes for receivingtubular rivets 61 and 62 through which the wires 36 and 38 respectivelyare first threaded, is placed Within the case 43 and is forced againstthe massof hydrolene forcing the surplus through the notches of theblock 27 and into the spaces around the coils adjacent the surface 28 ofthe block -35 27. The movement of the cover toward the block 27 islimited b the cover striking an internal annular bea 63 with which thecase 43 is initially provided. After the cover 60 has been assembled. asshown in- Fig. 2 the material of the case 43 is distorted by a spinningoperation in order to fo In a second internal annular head 64 so that hecover 60 will be confined between the beads 63 and 64.

The hollow rivets 61 and 62 secure to the cover 60 switch members 71and'72 respectivel These members are prevented from turning about theirsecuring rivets by providing them with notches at 73 and 74 which engageins or lugs 75 and 76 respectively prov de by the cover 60. The wlres 36and 38 are attached to the rivets 61 and 62 respectively by solderingafter the cover 60 has been attached to the case 43. In order tocomplete the'i nition primary circuit to the ignition coil t e switchcontacts 71 and 72 are bridged by a movable switch contact 77 which isattached to a. non-conducting late 78 by providing the plate with holes9 each receiving a tang 80 provided on each end of the contact 77. Thetang 80 1s 1nserted through a hole 79 and is bent over against thesideof the plate 78 opposite to that which receives the contact 77 Screws 81secure the plate 78 and a stop and detent 5 plate 82 to a switchoperatlng shaft 83 which is journalled centrally within a frame 84. Theframe 84 is provided with a boss or lug 85, extending from theperipheral flange 86 of the frame to a central boss 87 which provides abearing for the shaft 83. The stop plate 82 is provided with inwardlyextending ears 88 adapted to abut the lug and thus to limit the rotationof the shaft 183 to a uarter turn. The shaft 83 is indexed in its offand on positions by a ball 90 adapted to be received by either of twoopenings 91 with which both the non-conducting plates 78 and theindexing plates 82 are provided. The ball 90 is urged by a spring 92against the plate 82.

The shaft 83 is turned by a suitable key, '93 which, when inserted in akey hole in the shaft 83, will retract a plurality of locking bars 94from grooves 95 and locate them so that their ends are flush with thecylindrical peripher of the shaft 83 so that the shaft 83 may e turnedfrom off to on posi tion as is usual with that type of lock switch, andas noted in Fig. 1. When the key is turned in a clockwise direction asviewed in Fig.1 to on osition, the contact 77 will be turned 90 in acounterclockwise direction as viewed in Fig. 3 or in a clockwisedirection as viewed in Fi 4 in order to bridge the contacts 71 and $2.

The key shaft frame 84 is retained within the case 43 b shaping the lefthand end of the case 43' y spinning operation so as to provide a flange96 which engages a shoulder 97 provided bythe frame 84. The frame 84 islocated pro rlywith respect to the cover 60 by provi ing the frame witha re- 99 exten ing toward the left from the cover It is apparent fromthe foregoing description of the construction and method of assembly ofthe lock switch and coil unit that mprovements have been made which arethe base 60 provides an end cover for thecoil housing. .The constructionpermits the assembling of the end covers of the coil housing with thetubular case 43 after the windings and core and insulating body 27 havebeen inserted within the case. This method of assembly permits pouringthe sealing wax into'the coil housing from 'both ends so as to insurethat the core and windings are roperly anchored at both ends of the coilousing.

While the form of embodiment of the present invention as hereindisclosed, constitutes a preferred form, it is to be understood thatother forms might be adopted, all

,cess 98 see Fig. 5) which receives a lug coming within the scope of theclaims which follow:

What is claimed ,is as follows:

.1. An ignition coil and lock switch unit comprising a tubular caseenclosing windings and magnetizable parts, an. end cover carrying coilterminals closing one end of the case and having means for holding oneend of the magnetizable parts, a non-conducting block, positioning andsupporting the other end of said parts, a partition closing the coilhousing within the case and attached to the case a substantial distancewithin the case from the otherv end of the case, said partition carryinga switch contact, and a switch. frame providing a cover for the otherend of thecase and carrying a key controlled movable switch contact.

2. An ignition coil according to claim 1 having sealing material in bothends of the case and within the voids of the assembly of: windings andmagnetizable parts to secure the elements of the assembly in insulatedrelation.

3. An ignition coil and switch unit comprising a tubular case, windings.surrounding a central magnetizable core located within the case, an endcover carrying coil terminals and having means for holding one end ofthe core in fixed relation to the case, a non-conducting block locatedadjacent the other end of the core and having a recess for receivingthat end of the core and having a portion adapted to be surrounded by asealing com ound introduced into "the adjacent end of t e case, thesealing compound when solid fixing the block and the core relative tothe case, a wall member carrying switch contacts connected with one ofthe windings and located against the mass of sealing compound contiguousto the block and attached to the case, and a switch frame carryin amovable contact and an operating niem er attached to the case with themovable contact located for engagement with the sta-' tionary contacts.

4. A unit according to claim 3 in which the block has a notched flangebearing against the windings, the notches permitting the passage ofsealing material past the block sothat this material may fill the spacesaround the windings adjacent the block.

5. An ignition coil and switch unit comprising, a tubular case enclosingwindings and magnetizable parts, an end cover carry- I ing coilterminals closing one end of the case,

the opposite end of the case being closed by an electric switch having ashaft supported by a frame, anon-conducting plate attached to the shaft,and a movable conducting strip attached to the plate by providing theplate with apertures through which there extend tangs provided by theconductor, the tangs being bent against the plate in order to re-* tainthe conductor.

6. An ignition coil and switch unit comprising, a tubular case enclosingwindings and magnetizable parts, an end cover carrying coil terminalsclosing one end of the case, the opposite end of the case being closedby an electric switch having a frame, a shaft supported by the frame, ametal plate bearing directly against the one end of the shaft and havinga plurality of indexing holes, a non-conducting plate bearing directlyagainst the metal plate, screws passing through both plates and threadedinto said shaft, a spring actuated member supported by the frame andmovable into each of the indexing holes as the metal plate is turned, amovable contact supported by the non-conducting plate, a stationarycontact located for engagement by the movable contact, and a memberattached to the frame for supporting the stationary contact.

7. An ignition coil and switch unit comprising in combination, a tubularcase partitioned into compartments by a nonconductsignature.

HARRY E. NORVIEL.

